US5823633A - Process for the production of brushware by injection moulding and brushware produced by it - Google Patents

Process for the production of brushware by injection moulding and brushware produced by it Download PDF

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Publication number
US5823633A
US5823633A US08/702,613 US70261396A US5823633A US 5823633 A US5823633 A US 5823633A US 70261396 A US70261396 A US 70261396A US 5823633 A US5823633 A US 5823633A
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United States
Prior art keywords
channel
bundle
thickening
mouth
distance
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Expired - Lifetime
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US08/702,613
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English (en)
Inventor
Georg Weihrauch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gerresheimer Kuessnacht AG
Interbros GmbH
Original Assignee
Coronet Werke GmbH
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Application filed by Coronet Werke GmbH filed Critical Coronet Werke GmbH
Assigned to CORONET-WERKE GMBH reassignment CORONET-WERKE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEIHRAUCH, GEORG
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Publication of US5823633A publication Critical patent/US5823633A/en
Assigned to WILDEN INTERBROS AG reassignment WILDEN INTERBROS AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CORONET-WERKE GMBH
Assigned to WILDEN AG SCHWEIZ reassignment WILDEN AG SCHWEIZ MERGER (SEE DOCUMENT FOR DETAILS). Assignors: WILDEN INTERBROS AG
Assigned to GERRESHEIMER WILDEN AG SCHWEIZ reassignment GERRESHEIMER WILDEN AG SCHWEIZ CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: WILDEN AG SCHWEIZ
Assigned to GERRESHEIMER KUESSNACHT AG reassignment GERRESHEIMER KUESSNACHT AG CHANGE OF NAME Assignors: GERRESHEIMER WILDEN AG SCHWEIZ
Assigned to INTERBROS GMBH reassignment INTERBROS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GERRESHEIMER KUESSNACHT AG
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/04—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by mouldable materials, e.g. metals, cellulose derivatives, plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14385—Coating a portion of a bundle of inserts, e.g. making brushes

Definitions

  • the present invention relates to a process for manufacturing brushware and brushware.
  • An essential quality feature of brushware is the extraction resistance of the individual bristles or bundles, i.e. the bristles must be so embedded in the plastic mass of the bristle carrier that they are not detached under the forces occurring during use.
  • known injection moulding processes only those have proved usable in which there is a thickening on the bundle ends located in the mould and which after injecting with the plastic mass of the bristle carrier forms a type of anchor and also interconnects the bristles at their fixing-side end, so that the extraction forces acting on the bundle or only on certain individual bristles are introduced into the thickening and absorbed by the fixing thereof in the bristle carrier.
  • the known processes use all injection moulds in which one mould half is provided with a number of channels corresponding to the bristle coverage and through which the bristle bundles can be supplied to such an extent that the ends of the bundles project into the mould cavity.
  • the bristle ends of the bundle are then either interconnected by an adhesive forming a thickening (FR-A-1,453,829/Piotrowski) or, to the extent that they are formed from plastic monofilaments, are melted, the melt solidifying to a thickening having a larger cross-section than the bundle (DE 845,933/Schiffer).
  • the bristle fixing length is minimized in that the thickenings obtained by the melting of the bristle ends as a result of the injection pressure during the injection of the plastic melt of the bristle carrier are displaced to the opening of the channel carrying the bundle, so that the fixing length is reduced to the thickness of the thickening and the anchoring of the bundle is exclusively achieved by the plastic mass of the bristle carrier penetrating into the narrow gap between the thickening and the mould wall.
  • the further aim of this known process is to seal the channel by means of the thickening to prevent the injected plastic melt from passing out at the edge of the bundle or between the bristles (overspraying) and giving rise to burrs on the finished brush or at least to an unattractive appearance. This would also influence in an irregular manner the bending behavior of the bristles in the attachment area to the bristle carrier.
  • this process is unsatisfactory for several reasons. Firstly the pressing of the thickening on the bundle channel is not certain and cannot be guaranteed in a reproducible manner.
  • the thickening can also float within the melt, i.e. partly draws the bundle out of the channel and into the melt, so that neither the sealing effect, nor a uniform use length outside the bristle carrier can be obtained.
  • the extraction resistance of the bundle is also unsatisfactory, because the thin material web engaging over the thickening only has a moderate shear strength.
  • the bundles are not parallel to one another or at right angles to the fastening-side surface of the bristle carrier and have instead tilted with respect to their desired position or there has been a distortion of the bristles in the area where they are embedded.
  • sealing measures have been proposed in that into the bundles located in the channel is driven a mandrel in order to tightly compress the bristles in the channel (DE 3,832,520/Schiffer).
  • DE 2,922,877/Zahoransky the channel tapers towards the mould cavity and the bundles are pressed into the constriction.
  • compressed air acts on the channel from the outside.
  • the invention is a process for production of brushware in which a minimum amount of material is used while providing an adequate extraction resistance of bristle bundles of the brushware and also adequate individual bristles are obtained, in which the bending elasticity and recovery of the bristles are maintained and a satisfactory surface is achieved in the attachment area on the bristle carrier. Brushware satisfying these requirements is also to be provided.
  • the invention is based on the per se known finding that the bending strength or bending. elasticity (recovery) of the bristles obtained by stretching and thermally stabilizing the monofilaments is impaired by the melting of the bristle ends in connection with the formation of the thickening. In the immediate attachment area of the bristles to the thickening there is a molecular reorientation and consequently in this area a deterioration of the bending behavior of the individual bristles, as well as to a decrease in the tensile strength occurs. The deterioration of the bending behavior in the case of the known processes with sealing of the thickening on the channel leads to the expansion of the bundles.
  • the thermally weakened area of the bristles is embedded, so that over their free length outside the bristle carrier the bristles fully maintain the characteristics resulting from the stretching and thermal stabilization.
  • the extraction resistance of the individual bristles is also improved, because the weakened area is fixed.
  • the length which is thermally damaged during the melting of the bundle is dependent on several factors, particularly the melting point and the duration of the heating action, the nature of the plastic and the monofilament diameter. It is easily possible to establish the damaged length on a single bundle in a preliminary test by melting the bundle end and also a few alternating bending loads or stresses, so that the necessary embedding length for the injection moulding process for the product to be produced can be established.
  • the thermally damaged area is embedded exclusively by surrounding with the plastic of the bristle carrier.
  • the embedding length of the bundles is determined by the distance between the thickening and the mouth of the channel.
  • this distance must satisfy a further condition.
  • it must at least be sufficiently large for the air displaced during the injection moulding process in the mould cavity and which preferably migrates into depressions, cracks, etc. and therefore also behind the thickening on the bristle bundle, to be able to escape through the channel and optionally also between the bristles, because it is probably responsible for the cavities, shrink-holes, etc. on the bundle attachment point observed in the known processes.
  • the process of the invention also removes these disadvantages.
  • the distance between the thickening and the channel mouth must not be so large that overspraying occurs.
  • the invention fixes the essential parameters for the dimensioning of the smallest possible distance, namely embedding the thermally weakened length area of the bristles ensuring a completely satisfactory venting of the mould in the vicinity of the embedding in order to avoid cavities, shrink-holes, etc. and obtaining a smooth surface on the bristle carrier to avoid overspraying.
  • the invention has in particular recognized that the sealing of the bundle channels which has been required of late in injection technology is not necessary.
  • the parameters prescribed by the invention are obtained if the bundle is so positioned and fixed in the channel that the distance between the thickening and the channel mouth is 2 to 5 times the bristle diameter.
  • This can be numerically defined in such a way that the distance in the case of bristle diameters up to 0.3 mm is between 0.1 and 1.0 mm, preferably up to 0.4 mm and in the case of larger diameters between 0.5 to 2.0 mm is preferably set up to 1.5 mm.
  • bundles in which the sum of the cross-sections of the bristles of a bundle is between 50 and 75% of the cross-section of the channel carrying the bundle.
  • the capillaries between the bristles on the one hand and between the latter and the channel wall on the other are sufficiently large to permit a completely satisfactory venting of the mould, particularly in the vicinity of the undercuts present on the thickenings, but is also narrow enough to prevent the plastic melt, which must be solidified as rapidly as possible in the vicinity of the bundle attachment by suitable technological measures (guiding and controlling the and controlling the cooling of the mould, material selection in the vicinity of the bundle channels, guiding the injection speed and pressure, etc.) from penetrating the bristle capillaries or the channel.
  • the parameters to be respected according to the invention can be fixed by another practicable quantity, in that the bundle in the channel is so positioned and fixed that the distance between the thickening and the channel mouth is 20 to 50% of the channel diameter and the channel filling level given in the previously mentioned embodiment must also be implemented.
  • the procedure is preferably such that the bundle is introduced into the channel to such an extent that its end has a distance "A” from the channel mouth, is then melted by a length "L" ⁇ "A", so that the thickening has a distance "B” from the channel mouth and that the bundle is subsequently drawn back into the channel until the thickening reaches the desired distance "C" ⁇ "B" from the channel mouth.
  • This process can be optimized in that the holder on its transporting path from and to the injection mould and optionally the bundle following the formation of the thickening are cooled, so that the bundle and holder are always kept at a constant, low and controllable temperature and can be supplied in this state to the injection mould.
  • the problem solved by the invention in the aforementioned process can also be solved in that following the melting of the bundle end the formed still soft-plastic mass is shaped in the direction of the bristles in such a way that displacement thereof occurs between the mass and along the bundle circumference and surrounds the bristles over at least part of their length area thermally weakened by molecular reorientation during the melting of the monofilaments.
  • This process can also be modified in such a way that the bundle is introduced into the channel to such an extent that after the formation and shaping of the thickening, the latter has such a distance from the channel mouth, that the length area of the monofilaments weakened by molecular reorientation during monofilament melting is partly surrounded by the mass displaced from the melted monofilaments during the shaping of the thickening and in part by the injected plastic melt of the bristle carrier, without the plastic melt penetrating the channel.
  • the partial length of the bristles not surrounded by the displaced material of the thickening need only be dimensioned in such a way in this process that the desired venting through the channel takes place in the vicinity of the bundle and overspraying is avoided.
  • the completely satisfactory venting of the mould cavity, particularly in the vicinity of the bundle attachments, as well as the prevention of overspraying are, in a further embodiment, assisted in that the injection speed decreases from a maximum value at the start of injection to the complete filling of the injection mould and that the normally applied subsequent pressure is raised from an initially low value to a higher value.
  • the measure provided in another variant acts in the same way in that the mould half having the channel has in the vicinity of the channel mouth a contour concentric thereto and which in the area between the thickening and the channel mouth through a lengthening of the plastic melt flow path brings about a reduction of its flow rate and speeds up the cooling of the plastic melt in this area.
  • a lengthening of the flow path in the vicinity of the bundle can be constructively brought about in that the contour is formed by a collar lengthening the channel into the mould cavity, or in that the contour is formed by a depression in the mould wall and the channel mouth is located on the bottom of the depression.
  • top quality products particularly toothbrushes
  • injection moulding which leads to top quality brushes with respect to the general surface characteristics of the handle.
  • a toothbrush can be moulded in the vicinity of the handle end, which normally requires a high injection pressure in order to completely fill the mould cavity.
  • This high injection pressure in turn leads to a corresponding pressure build-up in the air contained in the cavity, which is completely satisfactorily removed by the setting of the distance between the thickening and the edge of the channel mouth according to the invention.
  • the mould can be so tightly sealed that no burrs form in the separating surface and there are also no additional moulding points on the bristle carrier surface.
  • the set problem is solved in that the thickening has a distance from the bundleside bristle carrier surface which roughly corresponds to the length area of the bristles thermally weakened during the melting of the monofilaments.
  • FIGS. 1-3 show the production of the thickening with an indication of the apparatus required in FIGS. 1a, 2a and 3a and a larger-scale view of the working area in FIGS. 1b, 2b and 3b.
  • FIG. 4 is a diagrammatic view of an injection mould during injection.
  • FIG. 5 is a diagrammatic view during the mould removal of the brush.
  • FIGS. 6 and 7 show another variant of the process for producing the thickening with the necessary apparatus parts in FIGS. 6a and 7a and a larger-scale view of the working area in FIGS. 6b and 7b.
  • FIGS. 8 to 10 show other variants of the process in a diagrammatic representation.
  • FIGS. 1a to 3a show two spaced perforated plates 1 and 2 of a bundle cassette between which is located a clamping plate 4 displaceable in accordance with the direction arrow 3.
  • the perforation pattern of the perforated plates 1 and 2 and the clamping plate 4 corresponds to the bundle arrangement of the bristle coverage to be produced.
  • the bristles 5 in the form of a bundle and namely as short cuts or taken from the endless strand, are introduced into the holes of the guide plate 1,2 and the clamping plate 4 until the end of the bristle project past plate 4 by a certain amount.
  • a heating device 6 FIG. 2A is then moved in front of the projecting bundle end and heats the bristle ends in contactless manner and melts the same, so that a thickening forms (FIG. 2a).
  • the clamping plate 4 is then moved into the open position (FIG. 3a) and the bundle is positioned by a slider 8 acting on the thickening 7 and then the clamping plate is moved into the closed position (not illustrated).
  • the thus fixed bundle is then linked to one mould half 10 of an injection mould 11 by means of the cassette formed by the perforated plates 1,2 and the clamping plate 4 and using a centering/alignment tool 9, the cassette terminating the moulding nest of the mould half 10.
  • the plastic melt is injected for the bristle carrier and it flows around the bundle ends projecting into the mould cavity, i.e. the thickening 7 and the bristles over the length "C" (FIG. 3b).
  • the perforated plate 2 has a concentric collar 15 projecting into the mould frame.
  • the bristles 5 are introduced into the perforated plates 1,2 and clamping plate 4 in the open position thereof, in the same way as described relative to FIG. 1a.
  • the bristle ends projecting over the perforated plate 2 are melted by means of a combined heating and shaping device 16 and the melt is shaped at the collar 15, so that once again a thickening 7 is formed, whose diameter "D" after melting is initially slightly larger than the bundle diameter (FIG. 6b) and is increased to the diameter "E" by shaping.
  • the mould half or the perforated plate 2 has in the vicinity of the bundle channel a flow path-lengthening, concentric contour, e.g. the collar 15 (FIG. 8) or a corresponding depression 19, at whose bottom then issues the bundle channel.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Brushes (AREA)
  • Pens And Brushes (AREA)
  • Artificial Filaments (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US08/702,613 1994-05-05 1995-04-14 Process for the production of brushware by injection moulding and brushware produced by it Expired - Lifetime US5823633A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4415886.6 1994-05-05
DE4415886A DE4415886A1 (de) 1994-05-05 1994-05-05 Verfahren zur Herstellung von Borstenwaren im Wege des Spritzgießens
PCT/EP1995/001408 WO1995030350A1 (de) 1994-05-05 1995-04-14 Verfahren zur herstellung von borstenwaren im wege des spritzgiessens

Publications (1)

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US5823633A true US5823633A (en) 1998-10-20

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US08/702,613 Expired - Lifetime US5823633A (en) 1994-05-05 1995-04-14 Process for the production of brushware by injection moulding and brushware produced by it

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US (1) US5823633A (zh)
EP (1) EP0759711B2 (zh)
JP (1) JP3813171B2 (zh)
CN (1) CN1101662C (zh)
AT (1) ATE170370T1 (zh)
AU (1) AU684938B2 (zh)
BR (1) BR9507609A (zh)
DE (2) DE4415886A1 (zh)
ES (1) ES2121625T5 (zh)
FI (1) FI108396B (zh)
NO (1) NO314826B1 (zh)
RU (1) RU2139670C1 (zh)
TW (1) TW299279B (zh)
UA (1) UA44893C2 (zh)
WO (1) WO1995030350A1 (zh)
ZA (1) ZA953302B (zh)

Cited By (27)

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US6260928B1 (en) * 1999-12-15 2001-07-17 Moll Industries, Inc. Handle Configuration for brush production by fusion
WO2001056766A2 (en) * 2000-02-01 2001-08-09 Moll Industries, Inc. Apparatus and method for producing brushware by injection molding
WO2001091607A3 (en) * 2000-05-26 2002-07-25 Moll Ind Inc Clamp for retaining bristle bundles of various sizes
US6439669B1 (en) 1999-08-31 2002-08-27 Gillette Canada Company Filament gripper
US20020166188A1 (en) * 2001-05-12 2002-11-14 Georges Driesen Toothbrush head
US6582028B2 (en) * 1999-06-02 2003-06-24 M+C Schiffer Gmbh Method for producing brushes
WO2004032673A1 (de) * 2002-09-25 2004-04-22 Braun Gmbh Borstenware und verfahren zur herstellung einer borstenware
US20040177462A1 (en) * 2003-03-14 2004-09-16 The Gillette Company Toothbrush head
US20050066462A1 (en) * 2003-09-26 2005-03-31 Moskovich Robert A. Flexible toothbrush head
US6893100B1 (en) 2000-09-19 2005-05-17 Gillett Canada Company Methods and apparatus for automated brush assembly
EP1593321A1 (de) * 2004-05-07 2005-11-09 GlaxoSmithKline Consumer Healthcare GmbH & Co KG Bürstenkopf
US20060096053A1 (en) * 2003-04-22 2006-05-11 Trisa Holding Ag Brush head for an electric toothbrush
US20060236482A1 (en) * 2003-01-20 2006-10-26 Matthias Georgi Toothbrush
US20070090681A1 (en) * 2005-10-24 2007-04-26 Vegter Hinderikus A Method and apparatus for making brushes
US20100299859A1 (en) * 2007-12-06 2010-12-02 Hans Kastl Processing of bristles
US7941886B2 (en) 2003-09-19 2011-05-17 Braun Gmbh Toothbrushes
US8042217B2 (en) 2004-11-02 2011-10-25 Colgate-Palmolive Company Toothbrush and method of making the same
US8332982B2 (en) 2004-04-23 2012-12-18 The Gillette Company Vibrating toothbrush
US20120317737A1 (en) * 2011-06-15 2012-12-20 Braun Gmbh Brush Head And Method And Tool For Producing Same
USRE44819E1 (en) 2000-03-16 2014-04-01 Procter & Gamble Business Services Canada Company Toothbrush
WO2015051218A1 (en) 2013-10-04 2015-04-09 The Procter & Gamble Company Process and apparatus for making tufted article
US20150165740A1 (en) * 2013-12-18 2015-06-18 The Gillette Company Device for fusing the ends of thermoplastic filaments
US9119462B2 (en) 2011-07-23 2015-09-01 Braun Gmbh Oral cleaning implement having a plastic staple comprising a cavity
US10362858B2 (en) 2015-09-03 2019-07-30 Braun Gmbh Method of manufacturing a brush and brush
US10646031B2 (en) 2016-04-08 2020-05-12 M+C Schiffer Gmbh Feeding device for feeding batches of bristle filaments to a bristle filament cassette
CN114007460A (zh) * 2019-06-21 2022-02-01 宝洁公司 用于生产牙刷头或其一部分的方法
US11540621B2 (en) 2017-07-12 2023-01-03 Koninklijke Philips N.V. Brush head arrangements

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JP2001511722A (ja) 1997-02-14 2001-08-14 スミスクライン・ビーチャム・コンシューマー・ヘルスケア・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング ２種の成分から製品を作成する射出成形法および装置
GB9703274D0 (en) * 1997-02-17 1997-04-09 Unilever Plc A toothbrush with flexibly mounted bristles
DE19745919C1 (de) * 1997-10-17 1999-08-12 Minnesota Mining & Mfg Spritzgußform zum Umspritzen von Kunststoff um ein Filtermaterial, Filter zum Filtern von Fluiden und Verfahren zum Herstellen eines derartigen Filters
DE19853030A1 (de) 1998-11-18 2000-05-25 Coronet Werke Gmbh Verfahren zur Herstellung von Borstenwaren und Vorrichtung zur Durchführung des Verfahrens
DE19962188A1 (de) 1999-12-22 2001-09-06 Schiffer Fa M & C Verfahren zur Herstellung eines Bürstenkopfes im Wege des Spritzgiessens
US6578929B2 (en) * 2001-05-23 2003-06-17 The Gillette Company Tufting oral brushes
DE102004020713B4 (de) * 2004-04-26 2007-10-04 Beiersdorf Ag Pinsel für kosmetische Produkte und Verfahren zu dessen Herstellung
DE102004058980A1 (de) * 2004-12-06 2006-06-08 Beiersdorf Ag Applikator für flüssige oder pastöse Medien, insbesondene dekorative Kosmetika wie Mascara
DE102006019706A1 (de) * 2006-04-27 2007-10-31 Osborn International Gmbh Bürste, insbesonder Streifenbürste, und Verfahren zum Herstellen einer Bürste
DE102009053663A1 (de) 2009-11-17 2011-05-19 Zahoransky Ag Kleben von kalibrierten Bündel
DE102011017099A1 (de) 2011-04-14 2012-10-18 M + C Schiffer Gmbh Verfahren zur Herstellung von Zahnbürsten
DE102012013638A1 (de) 2012-07-09 2014-01-09 M + C Schiffer Gmbh Verfahren und Vorrichtung zur Herstellung von Borstenware
TWI539911B (zh) * 2013-11-29 2016-07-01 Cheng Fang Integral molded seamless brush and its manufacturing method
CN105433590A (zh) * 2015-12-02 2016-03-30 上海力玛赫机电制造有限公司 用于刷毛与手柄连接的装置、连接方法及采用该装置制成的刷子
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US20060096053A1 (en) * 2003-04-22 2006-05-11 Trisa Holding Ag Brush head for an electric toothbrush
US10610340B2 (en) 2003-04-22 2020-04-07 Trisa Holding Ag Brush head for a toothbrush and method for producing the brush head
US8621699B2 (en) 2003-04-22 2014-01-07 Trisa Holding Ag Brush head for a toothbrush and method for producing the brush head
US11219513B2 (en) 2003-04-22 2022-01-11 Trisa Holding Ag Brush head for a toothbrush and method for producing the brush head
US8341792B2 (en) 2003-04-22 2013-01-01 Trisa Holding Ag Brush head for a toothbrush and method for producing the brush head
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US8069524B2 (en) 2004-05-07 2011-12-06 Glaxosmithkline Consumer Healthcare Gmbh & Co. Toothbrush
US8042217B2 (en) 2004-11-02 2011-10-25 Colgate-Palmolive Company Toothbrush and method of making the same
US20070090681A1 (en) * 2005-10-24 2007-04-26 Vegter Hinderikus A Method and apparatus for making brushes
US7677675B2 (en) 2005-10-24 2010-03-16 United Rotary Brush Corporation Method and apparatus for making brushes
US20100299859A1 (en) * 2007-12-06 2010-12-02 Hans Kastl Processing of bristles
US8845034B2 (en) * 2011-06-15 2014-09-30 The Braun GmbH Brush head and method and tool for producing same
US20120317737A1 (en) * 2011-06-15 2012-12-20 Braun Gmbh Brush Head And Method And Tool For Producing Same
US9119462B2 (en) 2011-07-23 2015-09-01 Braun Gmbh Oral cleaning implement having a plastic staple comprising a cavity
WO2015051218A1 (en) 2013-10-04 2015-04-09 The Procter & Gamble Company Process and apparatus for making tufted article
US20150097309A1 (en) * 2013-10-04 2015-04-09 The Procter & Gamble Company Process and apparatus for making tufted article
US9636898B2 (en) * 2013-12-18 2017-05-02 The Gillette Company Llc Device for fusing the ends of thermoplastic filaments
US20150165740A1 (en) * 2013-12-18 2015-06-18 The Gillette Company Device for fusing the ends of thermoplastic filaments
US10362858B2 (en) 2015-09-03 2019-07-30 Braun Gmbh Method of manufacturing a brush and brush
US10646031B2 (en) 2016-04-08 2020-05-12 M+C Schiffer Gmbh Feeding device for feeding batches of bristle filaments to a bristle filament cassette
US11540621B2 (en) 2017-07-12 2023-01-03 Koninklijke Philips N.V. Brush head arrangements
CN114007460A (zh) * 2019-06-21 2022-02-01 宝洁公司 用于生产牙刷头或其一部分的方法
US11944189B2 (en) 2019-06-21 2024-04-02 The Procter & Gamble Company Method for producing a toothbrush head or a part thereof

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NO964665D0 (no) 1996-11-05
ATE170370T1 (de) 1998-09-15
UA44893C2 (uk) 2002-03-15
EP0759711A1 (de) 1997-03-05
ZA953302B (en) 1996-01-05
EP0759711B1 (de) 1998-09-02
JPH09512724A (ja) 1997-12-22
JP3813171B2 (ja) 2006-08-23
BR9507609A (pt) 1997-08-19
EP0759711B2 (de) 2005-05-11
CN1101662C (zh) 2003-02-19
FI964069A0 (fi) 1996-10-10
DE4415886A1 (de) 1995-11-09
ES2121625T5 (es) 2005-11-16
TW299279B (zh) 1997-03-01
AU684938B2 (en) 1998-01-08
FI108396B (fi) 2002-01-31
CN1147197A (zh) 1997-04-09
AU2307795A (en) 1995-11-29
RU2139670C1 (ru) 1999-10-20
NO964665L (no) 1996-11-05
FI964069A (fi) 1996-10-10
WO1995030350A1 (de) 1995-11-16
DE59503437D1 (de) 1998-10-08
NO314826B1 (no) 2003-06-02

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